Filling-detecting mechanism



Jan. 29 1924.

J. C. BROOKS FILLING DETECTING MECHANISM Filed Oct. 20. 1922 II ...v e e h S s t e e h s 2 //v1// vT0R: M L AMA BY mfleew I ATTORNEY 8 l 2 8 a l Jan. 29 1924.

' J. C. BROOKS FILLING DETECTING MECHANISM Filed Oct. 20 1922 2 Sheets-5x166? 2 ATTORNEY Patented Jan. 29, 1924.

UNITED res man

JOHN C. BROOKS, OF PATERSON, NEW JERSEY, ASSIGNOR TO DBAPEB CORPORATION, OF HOPE-DALE, MASSACHUSETTS, A CORPQRATION MAINE.

FILLING-DETECTING MECHANISM.

To aZZ whm itmag concern.

Be 1t known that I, JOHN C. BROOKS, a citizen of the United States, residing at Paterson, in the county of Passaic and State of New Jersey, have invented an Improvement 1n Filling-Detecting Mechanism, of wh1ch the following description, 1n connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to weft or filling detecting mechanisms for looms, whereby upon breakage or exhaustion of filling the operative condition of the 100111 is changed. Such change in the operative condition of the loom may result in loom stoppage or in replenishing the filling, but in thepresent instance of the invention the detecting mechanism is combined with parts to efiect loom stoppage when aweft or filling fault occurs on a detectingbeat.

Heretofore, it has been the common practice to detect the presence or absence of weft or filling on a detecting beat by a tilting weft fork in cooperative relation with a fixed grid mounted on the lay, the construction being such that if filling was laid in front of the grid on a detecting beat, it would tilt the weft fork as the lay'moved frontwa-rdly and remove the tilting weft fork from the path oftheweft hammer or cam follower, or a part movable therewith.

The present invention, however, differs from the old practice in that the weft fork is non-tilting and the grid, instead of being fixed to the lay, is made movable, so that should filling be laid in front of the grid on a detecting beat, the non-tilting weft fork will effect movement of the grid and the loom. will continue to run, but should the weft or filling not be laid in front of the grid on a detecting beat, the grid will not be tilted, and through a train of mech-' anism will effect a change in the operative condition of'the loom.

The drawings show one good form of the invention, in which the non-tilting weft fork is mounted to extend rearwardly towards the lay and the grid is shown as mounted upon the lay for tilting movement thereon by the non-tilting weft fork when filling is laid in front of the grid on a detecting beat. In this invention, as illustrated, the weft hammer or cam follower is omitted, and a train of mechanism is made effective by the grid when it fails to be tilted on a detecting beat to effect loom stoppage. Instead of stopping the loom under the last named conditions, filling replenishment might be accomplished, but as mech' anism for this purpose is well understood by those familiar with filling replenishing looms, its illustration and detailed description is not necessary.

In the drawings:

Fig. 1 is a perspective view of sufficient parts of the loom equipped with the present invention to make clear the construction and operation; 1 Fig. 2 is an enlarged section from front to rear of the loom, showing more particularly the action of the tilting grid and nontilting weft fork;

Fig. 3 is a view similar to that of Fig. 1 but showing the non-tilting weft fork mounted on the loom temple; and

Fig.4 is a sectional detail showing the non-tilting weft fork secured to the temple slide bar.

The terms weft and filling as herein employed are synonomous, and refer to the thread that is laid in the shed by the shuttle.

The loom frame 1, the lay 2, the breast beam 3, the shipper stand 4 having the slot- 5 and holding notch 6, and the shipper 7, ma be of any or usual construction.

ecured' to the loom frame are the brackets 8, one preferably at each side of the loom, having bearings 9 for a transverse shaft 10. The shaft 10 may extend to the opposite side ofthe loom and therebe associated with the usual filling replenishing mechanism now well understood, or, as shown, the transverse shaft 10 may have connected thereto means for stopping the loom when the shaft is rocked, as will later appear, i

In the present instance of the invention, the transverse shaft 10 has securedthereb) theupward'ly extended arm 11 having a detent or finger 12, the rear portion of which is positioned to act upon the knock-off lever '13 when the transverse shaft is rocked, and

it is formed of a plate having a hub portion 1'? secured to the rock shaft 15 and extending upwardly at the rear of the lay where it is bent to form the frontwardly projecting portion 18 having the separated fingers 19. The fingers 19 at their upper extremity may be turned backwardly as at 20 to form guides for the tines of the weft fork, as will later appear. The construction of the grid as above described is found tobe a convenient form but obviously it may be varied, the essentials beingthat it shall-be movable or tiltable upon the lay partake of such movable 'ortilting quality when, by reason of filling being laid in front of the grid, the non-tilting weftfork acts upon the filling and grid on the frontw'ard'beat ofthe lay.

The non-tilting weft fork is mounted at the front of the loom, one at either side, and as shown, may be formed of a plate having a-slot 21 through which passes a bolt 22 for securing the weft fork 23 in-adjusted position. The weft fork, one at each side of the loom in the present form of the invention, is provided with fixed and non-tilting tines 24: which may be stamped out of the plate forming the weft fork, or. otherwise contrived, and the tines 24, of which there may be two or more, are separated to enter between the fingers-19 of the gridin case filling, is not present on-a detecting beat.

From the construction thus far described it will be apparent that should filling be laid in front of one of the grids on beat-up or detecting movement of the lay, the associated non-tilting weft fork will cause the tilting grid to be tilted and the rock shaft 1 5 rocked in its bearings, but should filling not be laid-in front of either grid on beat-up movement of the lay, or in other words if the filling has become broken or exhausted, theassociated non-tilting weft fork will fail to tilt the grid or move it as the lay beats up. The present invention takes advantageof this characteristic operation to associate the tilting or movable grid with a train of mechanism to effect-a change in the operation of theloom in case the tilting grid fails to be tilted on a detecting beat of the lay.

In the present instance of the invention the rock shaft 15 mounted on the lay and rocked by the associated tilting grids when filling is laid, has mounted thereon an arm which is normally in position to change the operative condition of the 100111 in case the rock shaft is not rocked as the lay beats up. The arm 25 may be connected to the rock shaft 15'by being formed integral with one of the tilting grids, as indicated in Fig. 1, or obviously, it may be secured directly to the rock shaft 15. The arm 25 extends frontwardly and normally occupies the dotted line position of Fig. 2, so that its front end portion is normally in position to engage a bunter 26 mounted upon the transverse shaft and secured thereto by means such as the bolt or set screw 27.

When a supply of intact filling a is laid in the shed as the shuttle is picked and the lay beats up, the opposite non-tilting filling fork will act through the filling or upon the associated tilting grid and will cause the rock shaft to be rocked as the lay beats up, thereby raising the arm. from its operative relation with the bunt-er 26 to the full line or inoperative position, as indicated in Fig. 2, and the loom will continue to run. If, however, the filling is not laid in the shed by reason of breakage or exhaustion thereof, the rock shaft 15 will not be rocked to inoperatively position the arm25 as-the lay beats up, and thearm 25 will engage the bunter 26 on the transverse shaft 10 and rock the transverse shaft 10 to effect a change in loom operation.

In the preferred form of the invention, as indicated in Figs. 1 and 2, the no1i-tilting weft fork is conveniently mounted upon the breastbeam of the loom but in some cases, as

indicated in Fig. 3, it may be mounted upon the temple slide, so that after tilting the associated grid when filling is laid in front of the grid as the lay beats up, the non-tilting weft fork may be moved frontwardly to the slight extent dictated by the slight frontwardmovement of the temple without, however, permitting the grid to tilt reversely and operatively position the arm 25.

Inthe modified form of the construction,

as indicated in Figs. 3 and 4:, the'temple stand 28 is secured to-the' loom frame as usual and in the upper wall thereof is formed the slot 29, Fig. 4, and the non-tilting weft fork 23 is secured to the temple slide 30 by means of the set screw 22, substantially as it is secured to the breast beam in F 1, the construction being such that after the non-tilting weft fork has tilted the grid as the lay beats upand thereby inoperatively positioned the arm 25, the nontilting weft fork may move frontwardly with the temple slide,,such frontward movement of the non-tilting weft fork, however. not being sufiicient to release the associated tilting grid or permit the :arm 25 to return to operative position.

The train of mechanism controlled by the tilting gnid for effecting a change inthe loom operation may be varied withinthe present invention, but where a single arm as 25 is employed as constituting one portion of such mechanism, it is desirable to' ha've two tilting grids one at either side of the loom, and each actingthrough the rockshaft towards the lay, a movable grid on the lay cooperating with the non-tilting weft fork for detecting the presence or absence of the weft or filling on a heat-up movement of the LE lay, an arm extending frontwardly from the grid and movable thereby from an operative to an inoperative position when the grid is moved from its normal position by the stationary weft fork, a hunter adapted to he engaged by said arm when the arm fails to he moved to inoperative position as the lay beats up, and means for changing the operative condition of the loom when hunter is engaged by the arm on a detecting heat of the lay. a

2. In a loom, the combination of the lay, a tilting grid mounted on the lay, a nontilting stationary weft fork cooperating with the tilting grid, a transverse shaft mounted at the front of the loom, a hunter connected to the transverse shaft, an arm connected to the tilting grid for movement therewith and constructed and arranged to engage and move the hunter should the grid fail to he tilted on a detecting heat of the lay, and means for changing the operative condition of the loom when the hunter is moved by the arm.

3. In a loom, the combination of the lay, a non-tilting weft fork mounted at the front of the loom, means for changing the adjusted position of the non-tilting weft fork, a tilting grid mounted on the lay and caused to he tilted on a detecting heat by the nontilting weft fork when filling is laid in front of the grid, an arm connected to the grid for movement therewith and means actuated by said arm for changing the operative condition of the loom when on a detecting heat the grid fails to he tilted.

4. In a loom, the combination of the lay,

a non-tilting weft fork extending rearward-.

ly towards the lay and having upwardly extending tines, a movable grid on the lay cooperating with the non-tilting weft fork for detecting the presence or absence of the Weft or filling on a heat up movement of the lay, a transverse shaft controlling the operative condition of the loom, a hunter connected to the shaft, an arm connected to the grid and adapted to engage and move the hunter and rock the transverse shaft when the grid fails to he tilted on a detecting heat, and means for changing the operative condition of the loom when the transverse shaft is rocked by the hunter.

5. In a loom, the combination of the lay, a non-tilting weft fork mounted at the front of the loom and extending towards the lay, a rock shaft mounted on the lay, a tilting grid connected to the rock shaft and cooperating with the non-tilting weft fork to detect the presence or absence of filling on a detecting heat, an arm extending from the rock shaft, a transverse shaft on the loom frame, a hunter on the transverse shaft connected and arranged to he engaged by the arm in case the grid fails to he tilted as the lay heats up, and means for changing the operative condition of the loom when the transverse shaft is rocked by the hunter.

6. In a loom, the combination of the lay, a tilting grid mounted thereon, an arm connected to and movable with the tilting grid, a hunter which is engaged by the arm on frontward movement of the lay when the grid fails to be tilted, a temple mounted at the front of the loom, a weft fork mounted on the temple for tilting the grid when filling is laid between the weft fork and grid, and means actuated by the hunter to change the operative condition of the loom when the hunter is moved by the arm.

In testimony whereof, I have signed my name to this specification.

JOHN C. BROOKS. 

